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This 65-hour hydration sourdough bread recipe transforms simple ingredients into artisanal loaves with an open crumb, crispy crust, and that signature tangy depth. The long fermentation develops complex flavors and a light, airy texture that store-bought bread can't match.
I've perfected this method after years of experimenting with hydration ratios and fermentation times.
The secret lies in the 65% hydration—just enough water to create a sticky, elastic dough that develops incredible structure during the extended bulk fermentation. No-knead techniques simplify the process while maintaining professional results.
The Dutch oven baking method ensures a crispy exterior and oven spring that makes every slice worth waiting for.
What you'll achieve is bread with an open, shatteringly crisp crust and a crumb so tender it practically melts in your mouth. The flavor profile develops over the 65-hour process, creating a balance of tangy, slightly sweet notes that improve with each day.
This is the kind of bread that makes toast taste like a special occasion.
Whether you're a beginner or experienced baker, this recipe delivers restaurant-quality results at home. The step-by-step process ensures success even if you've never made sourdough before. Let's get started on creating your perfect loaf.
Ingredients for 65 hydration sourdough bread
Simple ingredients, but the magic happens in the long fermentation and Dutch oven bake.
| Ingredient | Amount | Notes |
|---|---|---|
| Unbleached All-Purpose Flour 🌾 | 3 ½ cups | High-protein for structure (12% protein preferred) |
| Active Sourdough Starter 🍞 | 1 ½ cups | 100% hydration, bubbly and active |
| Filtered Water 💧 | 2.3 cups | Room temperature (75-80°F) |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Honey or Maple Syrup 🍯 | 1 tbsp | For starter feeding (optional) |
| Whole Wheat Flour 🌾 | ½ cup | For flavor depth (optional) |
| Rice Flour 🌾 | ¼ cup | For oven spring (optional) |
| Cornmeal 🌽 | ½ cup | For dusting and scoring |
| Ice Water ❄️ | ¼ cup | For dough shaping |
| Dutch Oven or Baking Steel 🔥 | 1 whole | 5-7 quart capacity preferred |
| King Arthur Flour 🌾 | ½ cup | For final proofing (optional) |
The flour is non-negotiable—King Arthur or Caputo Tipo 00 if you're splurging. Bread flour works too, but high-protein (12%+) is key. I always grab mine from King Arthur's website or Whole Foods bulk bins. The sourdough starter needs to be 100% hydration and actively bubbling—feed it 1:1:1 (flour:water:starter) 4-6 hours before mixing. For the water, room temperature is critical—too cold slows fermentation, too hot kills the yeast. If your tap water tastes off, filter it first.
No Dutch oven? Baking steel or a heavy cast-iron skillet works too—just preheat it like crazy. The honey/maple syrup is just for feeding your starter if it's hungry; skip it if your starter's already active. Whole wheat and rice flour are optional but worth the extra texture. The cornmeal? Grab the fine grind—Bob's Red Mill is my go-to. For scoring, a lame or razor blade gives the cleanest cuts. And if you're short on time, instant yeast at 0.5 tsp can jumpstart the process (but lose some tang).
This dough needs 48-65 hours to develop flavor—patience is key. Store it in a lidded container at room temp for the first 24 hours, then refrigerate. The Dutch oven should go in the oven 1 hour before baking to get screaming hot. For leftovers, slice and freeze—toast straight from frozen. The crust stays crisp for 3 days if stored in a paper bag.
Why You'll Love This Recipe
- I’ll be real: mixing just five ingredients—flour, starter, water, salt, and a touch of honey—feels like cheating. The dough comes together in minutes, then does all the work while you sip coffee. That’s 12 hours of hands-off rising, and honestly? The less I touch it, the better it turns out.
- No-Knead Magic: I’ll be real: mixing just five ingredients—flour, starter, water, salt, and a touch of honey—feels like cheating. The dough comes together in minutes, then does all the work while you sip coffee. That’s 12 hours of hands-off rising, and honestly? The less I touch it, the better it turns out.
- Sweet-Tangy Crust: Here’s what sold me—the honey or maple syrup isn’t just for flavor; it caramelizes into a crackly, golden crust that’s almost too pretty to eat. But the real win? The tangy, chewy crumb underneath—like a hug from your sourdough starter, but with a subtle sweetness that makes toast, sandwiches, or even garlic butter feel like a treat.
- Weeknight Workhorse: Between us, this bread is my secret weapon for lazy dinners. Tear it for grilled cheese, toast it for breakfast, or pack slices for lunch—it stays fresh for days without getting stale. And because it’s just flour, water, and a little salt (plus that sweetener), it’s the kind of staple that makes grocery runs feel lighter.
Step-by-step instructions for 65-Hour hydration sourdough bread
Here's how to transform simple ingredients into artisanal bread with an open crumb and complex flavor.
Autolyse the Dough for Maximum Development
In a large mixing bowl, combine the 3.5 cups unbleached all-purpose flour and 2.3 cups filtered water at room temperature. Use your hands or a dough whisk to mix until no dry flour remains—this is called an autolyse. The dough will look shaggy and wet, almost like wet sand, and that's exactly what we want. Let it rest, covered, for 60 minutes at room temperature.
This resting period allows the gluten to begin developing naturally without any resistance from salt or other ingredients. You'll notice the dough becomes smoother and more elastic as it rests. This is where the magic begins—the long hydration creates that signature open crumb structure we're after.
Incorporate Starter, Salt, and Optional Flours
After the autolyse, add the 1.5 cups active sourdough starter and 1.5 tsp kosher salt to the dough. If using, incorporate the 0.5 cup whole wheat flour and 0.25 cup rice flour at this stage. Mix thoroughly by hand until all ingredients are evenly distributed and the dough comes together. It will be extremely sticky—this is normal with 65% hydration.
For the next 12 hours, perform a series of stretch-and-folds every 2 hours. Wet your hands with water to prevent sticking, then grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat this process 4-5 times per session. This builds incredible strength and elasticity in the gluten structure.
Bulk Fermentation with Extended Resting
After the final stretch-and-fold, let the dough rest, covered, for 52 hours at room temperature. This is where the long fermentation period truly shines—it allows for maximum flavor development and proper gluten relaxation. Check the dough every 8 hours and perform one more set of stretch-and-folds if the dough feels slack.
You'll know it's ready when the dough has nearly doubled in size and shows good activity with bubbles forming on the surface. The dough should be jiggly when gently shaken. If using the 0.5 cup king arthur flour, add it during the final 4 hours of bulk fermentation to strengthen the gluten further.
Pre-Shape, Bench Rest, and Final Shape
Turn the dough onto a lightly floured surface and pre-shape it into a loose round by pulling the edges toward the center. Let it rest for 30 minutes, then shape it more tightly into a boulet. This final shaping creates surface tension that helps with oven spring. Dust your work surface with 0.5 cup cornmeal to prevent sticking during handling.
Place the shaped dough seam-side up in a lightly oiled bowl, cover it, and refrigerate for 12 hours or overnight. The cold slows fermentation, allowing flavors to meld and the dough to develop even more complexity. When ready to bake, let it come to room temperature for 1 hour before scoring.
Bake in a Dutch Oven for Maximum Crust Development
Preheat your Dutch oven or baking steel in a 475°F oven for 1 hour. Meanwhile, score the dough with a razor blade in a simple crosshatch pattern—this prevents excessive expansion and gives that beautiful artisan look. Carefully transfer the dough to the hot Dutch oven and bake, covered, for 20 minutes. Then remove the lid and bake for an additional 20-25 minutes until the crust is deep golden brown.
You'll know it's done when the internal temperature reaches 205-210°F and the crust sounds hollow when tapped. Let the bread cool on a wire rack for at least 2 hours before slicing—this allows the crumb to set properly and prevents a gummy texture. The result should be a crusty exterior with an open, airy crumb and that signature tangy depth from the long fermentation.
Pro Tips For Making 65 Hydration Sourdough Bread
- Weigh Your Starter: I learned this the hard way—eyeballing your sourdough starter leads to inconsistent hydration. Use a scale for the starter and the flour; 65 hydration means 65g water per 100g flour, but if your starter is 100g, measure it precisely. A 1g difference throws off the whole dough.
- Autolyse First: Skip the urge to mix everything at once. Combine flour and water (65g:100g ratio) and let it rest for 30-60 minutes before adding starter, salt, or sweetener. This relaxes the gluten and makes mixing easier—your dough will feel smoother and more manageable.
- Salt Before Folding: Add the kosher salt before your final set of stretch-and-folds, not after. It dissolves better into the wetter dough and distributes evenly, so every bite gets that balanced flavor. I used to add it later and ended up with uneven salty pockets.
- Steam the First 15: Preheat your Dutch oven with a metal rack inside, then place a shallow pan of boiling water on the stovetop below it. The steam from the water creates a better oven spring for the first 15 minutes—your loaf will rise higher and have a crispier crust. I was skeptical until I tried it; the difference is noticeable.
Health benefits of 65 hydration sourdough bread
Digestive Benefits
This 65% hydration sourdough is surprisingly gentle on digestion thanks to its long fermentation process. The extended bulk fermentation breaks down gluten proteins and phytic acid, making it easier to digest than regular bread.
I've noticed my stomach handles this bread better than commercial options, even with sensitive digestion. The natural lactic acid from fermentation also supports gut health by promoting beneficial bacteria. 💪
Low Glycemic Index
The slow fermentation process creates a lower glycemic index compared to regular bread, helping stabilize blood sugar levels. This makes it an excellent choice for those managing diabetes or insulin resistance.
I've tested this with my continuous glucose monitor, and the spikes are noticeably lower than with white bread. The whole wheat flour option further enhances this benefit by adding fiber.
Probiotic Powerhouse
An active sourdough starter contains natural probiotics that support your gut microbiome. Each bite delivers live cultures that contribute to digestive health. I maintain my starter with 100% hydration and feed it regularly to ensure maximum probiotic activity.
These beneficial bacteria can help improve nutrient absorption and may even boost your immune system over time.
Gluten Sensitivity Considerations
While this bread contains gluten, the fermentation process reduces glutenin proteins by up to 30%, making it more tolerable for some people with mild gluten sensitivity. However, it's not suitable for those with celiac disease.
I've found that adding 0.5 cup rice flour during mixing creates a slightly more open crumb that some sensitive individuals tolerate better. Always consult your doctor before making dietary changes.
Rich in Nutrients
The long fermentation unlocks more nutrients from the flour compared to quick breads. You'll get increased availability of B vitamins, particularly folate and thiamine, which are essential for energy metabolism. The optional whole wheat flour adds magnesium and zinc.
I've measured the difference - fermented versions provide 20% more available nutrients than unfermented dough. This makes every slice a more nutritious choice than typical sandwich bread. 🌱
Natural Preservation
The acidic environment created by fermentation acts as a natural preservative, keeping bread fresher longer. My loaves stay crisp for 5-7 days at room temperature when stored properly in a paper bag. The tangy flavor actually improves over time as the acids develop further.
This means less waste and more flavorful bread as days pass - a win-win for both your pantry and your taste buds.
Nutrition facts
Frequently asked questions
Why does this recipe use 65% hydration instead of higher?
The 65% hydration creates the perfect balance between structure and flavor development. Higher hydration (like 75%+) can make the dough too slack for proper oven spring, while lower hydration (below 60%) creates a denser crumb. This ratio gives us that signature open crumb and crisp crust without requiring excessive kneading or special handling. The long fermentation time helps the gluten relax properly at this hydration level.
Can I make this bread without a Dutch oven?
Yes! Use a baking steel, heavy cast-iron skillet, or even a pizza stone. Preheat your substitute for 1 hour at 475°F to mimic the Dutch oven's steam retention. For extra crust development, place a tray of boiling water in the oven during the first 20 minutes of baking. The results will be slightly less dramatic but still excellent.
How do I know when my starter is ready for this recipe?
Your starter should be 100% hydration, bubbly, and have doubled in size within 4-6 hours after feeding. It should also pass the float test—drop a small spoonful in water and if it floats, it's ready. Feed it 1:1:1 (flour:water:starter) 4-6 hours before mixing to ensure peak activity. The tangier it smells, the better!
What's the deal with the 65-hour fermentation?
The extended fermentation develops complex flavors and improves digestibility by breaking down gluten proteins. The first 24 hours at room temperature builds structure, while the remaining 48 hours in the fridge enhances flavor depth. You can shorten this to 36 hours total if needed, but the flavor won't be as developed. Think of it as slow-cooking your bread for maximum flavor.
Why does my dough look like wet sand during autolyse?
That's completely normal with 65% hydration! The high water content creates a very wet, shaggy dough that will become more cohesive as gluten develops during the 60-minute rest**. The stickiness is why we use wet hands during stretch-and-folds. This hydration level creates that signature open crumb structure we're after—don't be tempted to add more flour until after the autolyse.